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Finding the Fourth Proportional to 12,402.47, 18,605.43 and 6,559.49

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Solution

The fourth proportional to 12,402.47, 18,605.43 and 6,559.49 is: 9,840.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,402.47 : 18,605.43 = 6,559.49 : x
  2. Step 2: Convert to fraction form
    12,402.47/18,605.43 = 6,559.49/x
  3. Step 3: Cross multiply
    12,402.47x = 18,605.43 × 6,559.49
  4. Step 4: Simplify right side
    12,402.47x = 122,042,132.03
  5. Step 5: Solve for x
    x = 122,042,132.03/12,402.47
  6. Step 6: Final answer
    x = 9,840.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.